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| author |   Aharon Landau <aharonl@nvidia.com> | 2021-06-16 10:57:39 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2021-06-22 14:23:50 -0300 |
| commit | 336529518e9724d4cecabc622e57bcdce02e7c61 (patch) | |
| tree | 7c0062eadca1f760e9798b84c33708900cc77cc2 /drivers/infiniband/hw/mlx5/mlx5_ib.h | |
| parent | RDMA/mlx5: Refactor get_ts_format functions to simplify code (diff) | |
| download | linux-dev-336529518e9724d4cecabc622e57bcdce02e7c61.tar.xz linux-dev-336529518e9724d4cecabc622e57bcdce02e7c61.zip | |
RDMA/mlx5: Support real-time timestamp directly from the device
Currently, if the user asks for a real-time timestamp, the device will
return a free-running one, and the timestamp will be translated to
real-time in the user-space.
When the device supports only real-time timestamp and not free-running,
the creation of the QP will fail even though the user needs supported the
real-time one. To prevent this, we will return the real-time timestamp
directly from the device.
Link: https://lore.kernel.org/r/c6cfc8e6f038575c5c2de6505830f7e74e4de80d.1623829775.git.leonro@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/mlx5_ib.h')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index e9a3f34a30b8..a69874784387 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -550,6 +550,7 @@ static inline const struct mlx5_umr_wr *umr_wr(const struct ib_send_wr *wr) enum mlx5_ib_cq_pr_flags { MLX5_IB_CQ_PR_FLAGS_CQE_128_PAD = 1 << 0, + MLX5_IB_CQ_PR_FLAGS_REAL_TIME_TS = 1 << 1, }; struct mlx5_ib_cq { @@ -1614,4 +1615,10 @@ static inline bool mlx5_ib_lag_should_assign_affinity(struct mlx5_ib_dev *dev) (MLX5_CAP_GEN(dev->mdev, num_lag_ports) > 1 && MLX5_CAP_GEN(dev->mdev, lag_tx_port_affinity)); } + +static inline bool rt_supported(int ts_cap) +{ + return ts_cap == MLX5_TIMESTAMP_FORMAT_CAP_REAL_TIME || + ts_cap == MLX5_TIMESTAMP_FORMAT_CAP_FREE_RUNNING_AND_REAL_TIME; +} #endif /* MLX5_IB_H */ |